Functional Description
•
Had a length of 64 to rx_maxlen bytes inclusive
•
Had no CRC error, alignment error or code error.
See the Rx Align/Code Errors and Rx CRC errors statistic descriptions for definitions of alignment, code
and CRC errors. Overruns have no effect upon this statistic.
14.3.2.20.1.3 Multicast Rx Frames (Offset = 8h)
The total number of good multicast frames received on the port. A good multicast frame is defined to be:
•
Any data or MAC control frame which was destined for any multicast address other than
0xFFFFFFFFFFFF
•
Had a length of 64 to rx_maxlen bytes inclusive
•
Had no CRC error, alignment error or code error
See the Rx Align/Code Errors and Rx CRC errors statistic descriptions for definitions of alignment, code
and CRC errors. Overruns have no effect upon this statistic.
14.3.2.20.1.4 Pause Rx Frames (Offset = Ch)
The total number of IEEE 802.3X pause frames received by the port (whether acted upon or not). Such a
frame:
•
Contained any unicast, broadcast, or multicast address
•
Contained the length/type field value 88.08 (hex) and the opcode 0x0001
•
Was of length 64 to rx_maxlen bytes inclusive
•
Had no CRC error, alignment error or code error
•
Pause-frames had been enabled on the port (tx_flow_en = 1).
The port could have been in either half or full-duplex mode.
See the Rx Align/Code Errors and Rx CRC errors statistic descriptions for definitions of alignment, code
and CRC errors. Overruns have no effect upon this statistic.
14.3.2.20.1.5 Rx CRC Errors (Offset = 10h)
The total number of frames received on the port that experienced a CRC error. Such a frame:
•
Was any data or MAC control frame which matched a unicast, broadcast or multicast address, or
matched due to promiscuous mode
•
Was of length 64 to rx_maxlen bytes inclusive
•
Had no code/align error,
•
Had a CRC error
Overruns have no effect upon this statistic.
A CRC error is defined to be:
•
A frame containing an even number of nibbles
•
Failing the Frame Check Sequence test
14.3.2.20.1.6 Rx Align/Code Errors (Offset = 14h)
The total number of frames received on the port that experienced an alignment error or code error. Such a
frame:
•
Was any data or MAC control frame which matched a unicast, broadcast or multicast address, or
matched due to promiscuous mode
•
Was of length 64 to rx_maxlen bytes inclusive
•
Had either an alignment error or a code error
Overruns have no effect upon this statistic.
1212
Ethernet Subsystem
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated